Very small bolt sheared.... how to remove ?

My Dad has told me that over tighten everything, it's part of my mild OCD I think !

Anyway, I was repositioning all my brake levers etc on the bars and I've over tightened the very small bolt in my Formula brake lever and sheared it off leaving a large part of the bolt in the cable/gubbins side of the brake. It's not going anywhere but wasn't tight enough to stop movement so a cable tie wrapped around the remote seat post lever and the brake lever has held steady for two rides.

New bolt in hand but how the **** can I get the sheared part of the bolt out ? Any advice would be appreciated.

If you have snapped it because it stretched you may just be able to put a small screw driver in the end and turn it, if it snapped becuase you bottomed it out thats a whole different ball game as there is now alot of friction on the treads in that case its a drill out job 9 times out of 10.

Not going to help now but if you have ocd that bad buy yourself a torq wrench an stop yourself over tighteningbolts in the future.